fflcms2.h File Reference

#include "libavutil/csp.h"
#include "libavutil/frame.h"
#include "libavutil/pixfmt.h"
#include <lcms2.h>

Go to the source code of this file.

Data Structures
struct	FFIccContext

Functions
int	ff_icc_context_init (FFIccContext *s, void *avctx)
	Initializes an FFIccContext. More...
void	ff_icc_context_uninit (FFIccContext *s)
int	ff_icc_profile_generate (FFIccContext *s, enum AVColorPrimaries color_prim, enum AVColorTransferCharacteristic color_trc, cmsHPROFILE *out_profile)
	Generate an ICC profile for a given combination of color primaries and transfer function. More...
int	ff_icc_profile_attach (FFIccContext *s, cmsHPROFILE profile, AVFrame *frame)
	Attach an ICC profile to a frame. More...
int	ff_icc_profile_sanitize (FFIccContext *s, cmsHPROFILE profile)
	Sanitize an ICC profile to try and fix badly broken values. More...
int	ff_icc_profile_read_primaries (FFIccContext *s, cmsHPROFILE profile, AVColorPrimariesDesc *out_primaries)
	Read the color primaries and white point coefficients encoded by an ICC profile, and return the raw values in out_primaries. More...
int	ff_icc_profile_detect_transfer (FFIccContext *s, cmsHPROFILE profile, enum AVColorTransferCharacteristic *out_trc)
	Attempt detecting the transfer characteristic that best approximates the transfer function encoded by an ICC profile. More...

Detailed Description

Various functions for dealing with ICC profiles

Definition in file fflcms2.h.

Function Documentation

ff_icc_context_init()

int ff_icc_context_init	(	FFIccContext *	s,
		void *	avctx
	)

Initializes an FFIccContext.

This must be done prior to using it.

Returns 0 on success, or a negative error code.

Definition at line 30 of file fflcms2.c.

Referenced by iccdetect_init(), and iccgen_init().

ff_icc_context_uninit()

void ff_icc_context_uninit

(

FFIccContext *

s

)

Definition at line 42 of file fflcms2.c.

Referenced by ff_codec_close(), iccdetect_uninit(), and iccgen_uninit().

ff_icc_profile_generate()

int ff_icc_profile_generate	(	FFIccContext *	s,
		enum AVColorPrimaries	color_prim,
		enum AVColorTransferCharacteristic	color_trc,
		cmsHPROFILE *	out_profile
	)

Generate an ICC profile for a given combination of color primaries and transfer function.

Both values must be set to valid entries (not "undefined") for this function to work.

Returns 0 on success, or a negative error code.

Definition at line 145 of file fflcms2.c.

Referenced by iccgen_filter_frame().

ff_icc_profile_attach()

int ff_icc_profile_attach	(	FFIccContext *	s,
		cmsHPROFILE	profile,
		AVFrame *	frame
	)

Attach an ICC profile to a frame.

Helper wrapper around cmsSaveProfileToMem and av_frame_new_side_data_from_buf.

Returns 0 on success, or a negative error code.

Definition at line 172 of file fflcms2.c.

Referenced by iccgen_filter_frame().

ff_icc_profile_sanitize()

int ff_icc_profile_sanitize	(	FFIccContext *	s,
		cmsHPROFILE	profile
	)

Sanitize an ICC profile to try and fix badly broken values.

Returns 0 on success, or a negative error code.

Definition at line 213 of file fflcms2.c.

Referenced by iccdetect_filter_frame().

ff_icc_profile_read_primaries()

int ff_icc_profile_read_primaries	(	FFIccContext *	s,
		cmsHPROFILE	profile,
		AVColorPrimariesDesc *	out_primaries
	)

Read the color primaries and white point coefficients encoded by an ICC profile, and return the raw values in out_primaries.

Returns 0 on success, or a negative error code.

Definition at line 255 of file fflcms2.c.

Referenced by iccdetect_filter_frame().

ff_icc_profile_detect_transfer()

int ff_icc_profile_detect_transfer	(	FFIccContext *	s,
		cmsHPROFILE	profile,
		enum AVColorTransferCharacteristic *	out_trc
	)

Attempt detecting the transfer characteristic that best approximates the transfer function encoded by an ICC profile.

Sets out_trc to AVCOL_TRC_UNSPECIFIED if no clear match can be identified.

Returns 0 on success (including no match), or a negative error code.

Definition at line 302 of file fflcms2.c.

Referenced by iccdetect_filter_frame().